50566913 has 4 divisors (see below), whose sum is σ = 50582448. Its totient is φ = 50551380.

The previous prime is 50566909. The next prime is 50566931. The reversal of 50566913 is 31966505.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 31966505 = 5 ⋅6393301.

It is a cyclic number.

It is not a de Polignac number, because 50566913 - 2² = 50566909 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (50566933) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 803 + ... + 10088.

It is an arithmetic number, because the mean of its divisors is an integer number (12645612).

Almost surely, 2^50566913 is an apocalyptic number.

It is an amenable number.

50566913 is a deficient number, since it is larger than the sum of its proper divisors (15535).

50566913 is a wasteful number, since it uses less digits than its factorization.

50566913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15534.

The product of its (nonzero) digits is 24300, while the sum is 35.

The square root of 50566913 is about 7111.0416255286. The cubic root of 50566913 is about 369.7902707191.

The spelling of 50566913 in words is "fifty million, five hundred sixty-six thousand, nine hundred thirteen".